Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
  • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
  • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
  • B01J20/28095—Shape or type of pores, voids, channels, ducts
  • B01J20/28097—Shape or type of pores, voids, channels, ducts being coated, filled or plugged with specific compounds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
  • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
  • B01J20/26—Synthetic macromolecular compounds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
  • B01J20/30—Processes for preparing, regenerating, or reactivating
  • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
  • B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
  • B01J20/3206—Organic carriers, supports or substrates
  • B01J20/3208—Polymeric carriers, supports or substrates
  • B01J20/321—Polymeric carriers, supports or substrates consisting of a polymer obtained by reactions involving only carbon to carbon unsaturated bonds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
  • B01J20/30—Processes for preparing, regenerating, or reactivating
  • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
  • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
  • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
  • B01J20/3244—Non-macromolecular compounds
  • B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
  • B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
  • B01J20/30—Processes for preparing, regenerating, or reactivating
  • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
  • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
  • B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
  • B01J20/3244—Non-macromolecular compounds
  • B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
  • B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
  • B01J20/3253—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such comprising a cyclic structure not containing any of the heteroatoms nitrogen, oxygen or sulfur, e.g. aromatic structures
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
  • B01J20/30—Processes for preparing, regenerating, or reactivating
  • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
  • B01J20/3291—Characterised by the shape of the carrier, the coating or the obtained coated product
  • B01J20/3293—Coatings on a core, the core being particle or fiber shaped, e.g. encapsulated particles, coated fibers

Definitions

• the invention pertains to the use of a granulate for the removal of liquid, gaseous and/or dissolved organic constituents from a process stream, said granulate consisting of dimensionally stable, porous synthetic particles with an extracting agent having a boiling point higher than 350°C at 1 bar immobilized therein.
• the use of a dimensionally stable synthetic granulate for the extraction of liquid, gaseous and/or dissolved constituents from a process stream is known from EP-A-0 761 304.
• the granulate described in said document is obtained by dissolving a polymer in one or more liquid and miscible compounds at a temperature above the upper critical phase separation temperature Tc, followed by a lowering of the temperature and mechanical diminution of the polymer filled with the liquid compounds.
• the solvent used in the preparation preferably has the same composition as the extracting agent.
• the incorporation into the polymer solution of 5 to 60% by volume of filler ensures that the effectiveness of a column filled with particles which have a liquid extraction medium immobilized therein will be ' as good as retained even after several regenerations with steam.
• a drawback to the use of a filler, preferably in the form of short fibers, is that in the course of processing in an extruder and the subsequent diminution problems due to wear may occur in the equipment used.
• Another drawback to the granulate prepared in this manner is the comparative inhomogeneity of the material obtained, which may have a negative effect on the flow pattern when it is used in, say, an extraction tower.
• the invention now provides for the use of a synthetic granulate which obviates wholly or for the most part the problems which arise when the known granulate is used.
• the invention consists in that when a synthetic granulate of the known type mentioned in the opening paragraph is used, the granulate is obtained by suspension polymerization of a monovinyl compound in the presence of a polyvinyl compound, with at least 50 wt.% of the monomer units having an aromatic structure and with the solvent for the monomers acting both as a non- solvent for the copolymer and as an extracting agent.
• the process stream of this process is an aqueous process stream.
• a synthetic granulate which can be obtained by suspension polymerization of a mixture of monomers 10 to 80 wt.% of which is made up of one or more monovinyl compounds and 90 to 20 wt.% of which is made up of polyvinyl compounds.
• a monomer composition at least 40 wt.% of which is composed of a polyvinyl compound and at most 60 wt.% of which is composed of one or more monovinyl compounds.
• Suitable aromatic polyvinyl compounds are divinyl benzene, trivinyl benzene, divinyl toluene, and divinyl xylene, and polyvinyl heterocyclic compounds such as divinyl pyridine.
• Preferred polyvinyl compounds are divinyl benzene and trivinyl benzene, while for the monoethylenically unsaturated compounds preference is given to styrene, the o-, m-, and p-methyl styrenes, the o-, m-, and p-ethyl styrenes, ethylvinyl benzene, vinyl naphthalene, and vinyl toluene.
• hydrocarbon monomers are preferred, heterocyclic compounds such as divinyl pyridine are also eligible for use.
• Suitable aliphatic ethylenically unsaturated compounds are diacrylates and dimethacrylates, such as ethylene glycol diacrylate, ethylene glycol dimethacrylate, trimethylol propane trimethacrylate, neopentyl glycol dimethacrylate, divinyl ketone, divinyl sulfide, allyl acrylate, diallyl maleate, and diallyl fumarate.
• Suitable monoethylenically unsaturated monomers are esters of acrylic acid, such as methyl, ethyl, and propyl acrylate, and the corresponding esters of methacryiic acid where the ester group has 1-10 carbon atoms.
• divinyl benzene When a technical or commercial grade of divinyl benzene is used, about 20 to 50% of the divinyl benzene is composed of ethylvinyl benzene, and for the calculation the ethylvinyl benzene must be included in the styrene or another monovinyl monomer. In addition, a minimal quantity of some other monomer such as acrylonitrile may be incorporated into the polymer.
• the polymerization reaction is carried out in the presence of an initiator and a solvent for the monomer mixture and a non- solvent for the reaction product formed.
• the polymerization reaction can be carried out in the conventional manner for suspension polymerization in the presence of a radical initiator such as benzoyi peroxide, lauroyl peroxide, t-butyl hydroperoxide or azobisisobutyronitrile.
• a radical initiator such as benzoyi peroxide, lauroyl peroxide, t-butyl hydroperoxide or azobisisobutyronitrile.
• the quantity thereof to be used ranges from 0.1 to 12 wt.%, depending on the desired porosity of the synthetic particles.
• the polymerization reaction is carried out in the presence of the same solvent which acts both as a non-solvent for the copolymer and as extracting agent.
• the extracting agent should have a boiling point higher than 350°C at 1 bar. Extracting agents that are regenerable are preferred. It is advantageous to regenerate the extracting agents by applying steam and regeneration columns.
• suitable solvents may be mentioned the same ones as are also used as extracting agents for the use claimed in EP-A-0 761 304.
• paraffin oil dibenzyl toluene, and polypropylene glycol ether having a molecular weight of 600 to 1 ,500.
• diisodecyl phthalate is particularly favorable.
• the extracting agent is hydrolysis resistant.
• Extracting agent wherein the acid number of the extracting agent shows a change of less than 0.9 mmoles/kg/week according to the modified beverage bottle method ASTM D 2619-95, the modification being that no Cu strips are added or used in procedure steps 7.3, 7.11 , and 7.13, and that in step 7.5 the temperature is adjusted to 90°C ⁇ 0.5°C at 5 rpm for 1 week, are preferred.
• the polymerization reaction is commonly carried out in the presence of a stabilizer.
• suitable stabilizers are a natural gum, starch, gelatin, carboxymethyl cellulose, polystyrene, polyvinyl acetate, polyvinyl alcohol, and polyvinyl pyrrolidone.
• a co-stabilizer being present in addition to the stabilizer, for instance a mixture based on sodium sulfate, sodium phosphate, and calcium chloride.
• Ceffi(t) the concentration of the constituent in the effluent at time t
• Nmix number of ideal mixers
• ⁇ average residence time (s)
• t time in

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• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Organic Chemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Solid-Sorbent Or Filter-Aiding Compositions (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Treating Waste Gases (AREA)
• Treatment Of Liquids With Adsorbents In General (AREA)
• Gas Separation By Absorption (AREA)

Applications Claiming Priority (3)

Publications (2)

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Family Applications (1)

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Family Cites Families (7)

• 2000
  • 2000-08-18 NL NL1015960A patent/NL1015960C2/nl not_active IP Right Cessation
• 2001
  • 2001-08-15 EP EP01976090A patent/EP1315561B1/fr not_active Expired - Lifetime
  • 2001-08-15 DK DK01976090T patent/DK1315561T3/da active
  • 2001-08-15 US US10/344,544 patent/US7258796B2/en not_active Expired - Lifetime
  • 2001-08-15 PT PT01976090T patent/PT1315561E/pt unknown
  • 2001-08-15 AT AT01976090T patent/ATE325656T1/de active
  • 2001-08-15 WO PCT/EP2001/009458 patent/WO2002016029A1/fr not_active Ceased
  • 2001-08-15 DE DE60119548T patent/DE60119548T2/de not_active Expired - Lifetime
  • 2001-08-15 ES ES01976090T patent/ES2261478T3/es not_active Expired - Lifetime
  • 2001-08-15 AU AU2001295472A patent/AU2001295472A1/en not_active Abandoned

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